280.88% is the change from 136 to 518
Calculation steps:
[( 518 - 136 ) ÷ 136] x 100 = 280.88%
Formula
Percentage change = [(518 - 136) / 136] x 100
Subtract the new number by the original number
518 - 136 = 382
382 ÷ 136 = 2.8088235294117645
2.8088235294117645 x 100 = 280.88%